Error while getting testcases status from all testsuites on project level

Added project Map but still getting error 

Here is updated code : 

import com.eviware.soapui.model.testsuite.TestStepResult.TestStepStatus
import com.eviware.soapui.model.testsuite.TestRunner.Status
import com.eviware.soapui.impl.wsdl.*
import com.eviware.soapui.impl.wsdl.testcase.*
import com.eviware.soapui.model.testsuite.*

def projectMap = [:]

def projectStatusMap = [:]

def testCaseMap = [:]
def testCaseStatusMap = [:]
testSuite.testCaseList.each{

def reportMap=[:]
it.testSteps.each{

def testCaseStatus =true
try{

reportMap << [(it.value.name):(it.value.getAssertionStatus().toString())]
tempStatus = (it.value.getAssertionStatus().toString()=='PASS')?true:false
testCaseStatus = testCaseStatus && tempStatus

testSuite.setPropertyValue("Status", testCaseStatus.toString())
}

catch (e){

//log.info e

}

}

testCaseStatus = testSuite.getPropertyValue("Status")
def testCaseStatusStr = (testCaseStatus=='true')?'PASS': 'FAIL'

testCaseStatusMap << [(it.name):(testCaseStatusStr.toString())]
}